/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: rgba(0, 240, 255, 0.15);
            --border-glow: rgba(0, 240, 255, 0.5);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.875rem;
            --radius-sm: 0.625rem;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            margin: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent-cyan);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ========== NAVIGATION ========== */
        .navbar-main {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 0.75rem 0;
            transition: background var(--transition-smooth);
        }

        .navbar-main .nav-brand {
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .navbar-main .nav-brand .brand-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }

        .navbar-main .nav-link-item {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            margin: 0 0.15rem;
        }

        .navbar-main .nav-link-item:hover,
        .navbar-main .nav-link-item.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-auth-btns .btn-outline-nav {
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            background: transparent;
            padding: 0.5rem 1.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }

        .nav-auth-btns .btn-outline-nav:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }

        .nav-auth-btns .btn-solid-nav {
            background: linear-gradient(135deg, var(--accent-blue), #005ae0);
            color: #fff;
            border: none;
            padding: 0.5rem 1.6rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 0 18px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-fast);
        }

        .nav-auth-btns .btn-solid-nav:hover {
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.7);
            transform: translateY(-1px);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: radial-gradient(ellipse at 30% top, rgba(0, 82, 255, 0.18), transparent 60%),
                radial-gradient(ellipse at 70% bottom, rgba(0, 240, 255, 0.1), transparent 60%),
                var(--bg-primary);
            overflow: hidden;
            padding: 6rem 0 4rem;
        }

        .hero-bg-pattern {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            mix-blend-mode: screen;
            pointer-events: none;
        }

        .hero-section .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-subtle);
            color: var(--accent-cyan);
            padding: 0.4rem 1.2rem;
            border-radius: 3rem;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(10px);
        }

        .hero-title {
            font-size: clamp(2.6rem, 6vw, 4.2rem);
            font-weight: 900;
            line-height: 1.12;
            letter-spacing: -0.03em;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, #fff 20%, var(--accent-cyan) 90%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 620px;
            margin-bottom: 2rem;
        }

        .hero-kpi-row {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2.2rem;
        }

        .hero-kpi-item .kpi-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .hero-kpi-item .kpi-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .btn-cta-hero {
            background: linear-gradient(135deg, var(--accent-blue), #0040cc);
            color: #fff;
            border: none;
            padding: 0.85rem 2.6rem;
            border-radius: 3rem;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.55);
            transition: all var(--transition-smooth);
            display: inline-block;
            text-align: center;
        }

        .btn-cta-hero:hover {
            box-shadow: 0 0 42px rgba(0, 82, 255, 0.8);
            transform: translateY(-3px);
            color: #fff;
        }

        .btn-outline-hero {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            background: transparent;
            padding: 0.85rem 2.2rem;
            border-radius: 3rem;
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition-fast);
        }

        .btn-outline-hero:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .hero-visual-card {
            position: relative;
            background: var(--bg-card);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-card);
        }

        .hero-visual-card img {
            border-radius: var(--radius-md);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
        }

        /* ========== SECTION COMMONS ========== */
        .section-block {
            padding: 5rem 0;
        }

        .section-label {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            margin-bottom: 0.6rem;
            display: inline-block;
        }

        .section-title {
            font-size: clamp(2rem, 4.5vw, 2.9rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 700px;
            margin-bottom: 3rem;
        }

        /* ========== CARDS ========== */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: all var(--transition-smooth);
            height: 100%;
        }

        .glass-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-6px);
        }

        .promo-tier-card {
            background: linear-gradient(145deg, rgba(13, 17, 30, 0.9), rgba(8, 9, 15, 0.95));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2.2rem 1.8rem;
            position: relative;
            transition: all var(--transition-smooth);
        }

        .promo-tier-card.featured {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.2);
        }

        .promo-tier-card .tier-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-cyan);
            color: #08090F;
            font-weight: 800;
            font-size: 0.8rem;
            padding: 0.3rem 1.4rem;
            border-radius: 3rem;
            white-space: nowrap;
        }

        /* ========== NEWS LIST ========== */
        .news-list-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all var(--transition-fast);
        }

        .news-list-item:hover {
            background: rgba(0, 240, 255, 0.03);
            padding-left: 0.8rem;
            border-radius: var(--radius-sm);
        }

        .news-list-item .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            white-space: nowrap;
            min-width: 95px;
        }

        .news-list-item .news-title-link {
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-primary);
            line-height: 1.5;
        }

        .news-list-item .news-title-link:hover {
            color: var(--accent-cyan);
        }

        /* ========== FAQ ========== */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.8rem;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            padding: 1.2rem 1.5rem;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .faq-accordion .accordion-body {
            color: var(--text-secondary);
            line-height: 1.7;
            padding: 0 1.5rem 1.5rem;
        }

        /* ========== FAB ========== */
        .fab-floating {
            position: fixed;
            left: 1.5rem;
            bottom: 2.5rem;
            z-index: 1080;
            width: 56px;
            height: 56px;
            border-radius: 3rem;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1.5px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.8rem;
            cursor: pointer;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.45);
            transition: all var(--transition-smooth);
            animation: floatBreath 3s infinite ease-in-out;
        }

        .fab-floating::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 3rem;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            pointer-events: none;
        }

        .fab-floating:hover {
            box-shadow: 0 0 38px rgba(0, 240, 255, 0.75);
            transform: scale(1.08);
        }

        @keyframes floatBreath {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }

        /* ========== FOOTER ========== */
        .footer-main {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 3.5rem 0 2rem;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        .footer-main .footer-brand {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--text-primary);
        }

        .footer-main a {
            color: var(--text-muted);
        }

        .footer-main a:hover {
            color: var(--accent-cyan);
        }

        .footer-divider {
            border-color: rgba(255, 255, 255, 0.08);
            margin: 2rem 0;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 991.98px) {
            .hero-section {
                text-align: center;
                min-height: auto;
                padding: 7rem 0 4rem;
            }
            .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-kpi-row {
                justify-content: center;
            }
            .hero-visual-card {
                margin-top: 2.5rem;
            }
        }

        @media (max-width: 767.98px) {
            .navbar-main .nav-brand {
                font-size: 1.05rem;
            }
            .nav-auth-btns .btn-outline-nav,
            .nav-auth-btns .btn-solid-nav {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .section-block {
                padding: 3.2rem 0;
            }
            .promo-tier-card {
                margin-bottom: 1.5rem;
            }
            .fab-floating {
                width: 48px;
                height: 48px;
                left: 1rem;
                bottom: 1.5rem;
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .btn-cta-hero,
            .btn-outline-hero {
                width: 100%;
                margin-bottom: 0.6rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #08090F;
            --bg-card: rgba(13, 17, 30, 0.85);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(0, 82, 255, 0.25);
            --glow-blue: 0 0 15px rgba(0, 82, 255, 0.5);
            --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3);
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            background: var(--bg-deep);
            color: var(--text-silver);
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header / Navigation */
        .navbar-main {
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.2);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 14px 0;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white) !important;
            text-decoration: none;
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .brand-icon {
            font-size: 1.6rem;
            filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.7));
        }

        .nav-link-item {
            color: var(--text-silver);
            text-decoration: none;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 30px;
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .nav-link-item:hover,
        .nav-link-item.active {
            color: var(--text-white);
            background: rgba(0, 82, 255, 0.15);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.3);
        }

        .btn-outline-nav {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            font-size: 0.9rem;
        }

        .btn-outline-nav:hover {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: var(--glow-cyan);
        }

        .btn-solid-nav {
            background: var(--accent-blue);
            border: none;
            color: var(--text-white);
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            font-size: 0.9rem;
            box-shadow: var(--glow-blue);
        }

        .btn-solid-nav:hover {
            background: #0040D0;
            box-shadow: 0 0 22px rgba(0, 82, 255, 0.8);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 1.8rem;
        }

        #mobileNav {
            background: rgba(13, 17, 30, 0.98);
            backdrop-filter: blur(16px);
        }

        #mobileNav .nav-link-item {
            display: block;
            padding: 12px 16px;
            border-radius: 12px;
            margin: 2px 0;
        }

        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.08) 0%, rgba(0, 240, 255, 0.04) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .progress-ring-wrapper {
            position: relative;
            width: 200px;
            height: 200px;
            margin: 0 auto;
        }

        .progress-ring-circle {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: conic-gradient(#0052FF 0deg 260deg, rgba(255,255,255,0.08) 260deg 360deg);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.35);
        }

        .progress-inner {
            width: 150px;
            height: 150px;
            background: var(--bg-deep);
            border-radius: 50%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .progress-percent {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
        }

        .hero-badge {
            background: rgba(0, 82, 255, 0.2);
            border: 1px solid var(--border-glass);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            display: inline-block;
            font-weight: 500;
        }

        .tier-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: var(--transition);
            text-align: left;
        }

        .tier-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--glow-cyan);
            transform: translateY(-3px);
        }

        .tier-card h5 {
            color: var(--text-white);
            font-weight: 700;
        }

        .btn-glow-primary {
            background: var(--accent-blue);
            border: none;
            color: var(--text-white);
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 700;
            box-shadow: var(--glow-blue);
            transition: var(--transition);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-size: 0.95rem;
        }

        .btn-glow-primary:hover {
            background: #0040D0;
            box-shadow: 0 0 28px rgba(0, 82, 255, 0.9);
            transform: translateY(-2px);
        }

        /* Section Titles */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 3px;
        }

        /* Data Cards */
        .data-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: left;
            transition: var(--transition);
        }

        .data-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--glow-cyan);
        }

        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        /* Service Matrix */
        .service-row {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px;
            margin-bottom: 20px;
            transition: var(--transition);
            text-align: left;
        }

        .service-row:hover {
            border-color: var(--accent-blue);
            box-shadow: 0 6px 24px rgba(0, 82, 255, 0.2);
        }

        .service-tag {
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            border-radius: 20px;
            padding: 4px 12px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-white);
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--accent-cyan);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-silver);
            display: none;
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 16px;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.18) 0%, rgba(0, 240, 255, 0.08) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: left;
            border: 1px solid var(--border-glass);
        }

        /* Footer */
        .footer-main {
            background: rgba(8, 9, 15, 0.9);
            border-top: 1px solid rgba(0, 82, 255, 0.25);
            padding: 48px 0 24px;
            margin-top: 40px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .footer-divider {
            border-color: rgba(255,255,255,0.08);
            margin: 32px 0;
        }

        .footer-main a {
            color: var(--text-silver);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-main a:hover {
            color: var(--accent-cyan);
        }

        /* FAB */
        .fab-cyber {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1000;
            width: 56px;
            height: 56px;
            background: rgba(13, 17, 30, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #00F0FF, #0052FF) 1;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            cursor: pointer;
            transition: var(--transition);
            animation: fab-float 3s ease-in-out infinite;
        }

        .fab-cyber:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            transform: scale(1.05);
            color: #fff;
        }

        @keyframes fab-float {
            0%,100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .hero-section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .metric-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 767.98px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-brand {
                font-size: 1rem;
            }
            .progress-ring-wrapper {
                width: 150px;
                height: 150px;
            }
            .progress-inner {
                width: 110px;
                height: 110px;
            }
            .progress-percent {
                font-size: 2rem;
            }
            .fab-cyber {
                left: 16px;
                bottom: 84px;
                width: 48px;
                height: 48px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.85);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-glow: rgba(0, 240, 255, 0.4);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: rgba(0, 240, 255, 0.15);
            --border-glow: rgba(0, 240, 255, 0.5);
            --gradient-hero: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25);
            --radius-xl: 20px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: var(--bg-primary);
            color: var(--text-primary);
            font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        /* Custom Container */
        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Navigation */
        .navbar-main {
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: all 0.3s ease;
        }
        .nav-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.3px;
            transition: color 0.2s;
        }
        .nav-brand:hover {
            color: var(--accent-cyan);
        }
        .brand-icon {
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px var(--accent-glow));
        }
        .nav-link-item {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all 0.2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link-item:hover,
        .nav-link-item.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            text-shadow: 0 0 8px var(--accent-glow);
        }
        .btn-outline-nav {
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-outline-nav:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px var(--accent-glow);
            color: var(--accent-cyan);
        }
        .btn-solid-nav {
            background: var(--gradient-hero);
            border: none;
            color: #FFFFFF;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(0, 82, 255, 0.5);
        }
        .btn-solid-nav:hover {
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
            transform: translateY(-1px);
        }
        .nav-auth-btns {
            flex-shrink: 0;
        }

        /* Article Hero Banner */
        .article-hero {
            background: linear-gradient(180deg, rgba(0,82,255,0.08) 0%, rgba(8,9,15,1) 100%);
            padding: 60px 0 40px;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0,240,255,0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .article-meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }
        .article-category-label {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* Content Area */
        .article-content-wrapper {
            padding: 50px 0 70px;
            background: var(--bg-primary);
        }
        .article-main-body {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            box-shadow: var(--shadow-card);
            position: relative;
            color: var(--text-primary);
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-main-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-top: 32px;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.2px;
            border-left: 4px solid var(--accent-cyan);
            padding-left: 16px;
        }
        .article-main-body h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 12px;
            color: var(--accent-cyan);
        }
        .article-main-body p {
            margin-bottom: 18px;
            color: var(--text-secondary);
        }
        .article-main-body ul, .article-main-body ol {
            margin-bottom: 18px;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-main-body li {
            margin-bottom: 8px;
        }
        .article-main-body img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            margin: 24px 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.5);
        }
        .article-main-body a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-main-body a:hover {
            text-shadow: 0 0 8px var(--accent-glow);
        }
        .article-main-body blockquote {
            border-left: 4px solid var(--accent-cyan);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(0, 240, 255, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        /* Not Found State */
        .not-found-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .not-found-icon {
            font-size: 3.5rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            opacity: 0.7;
        }
        .btn-back-home {
            background: var(--gradient-hero);
            border: none;
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            display: inline-block;
            margin-top: 20px;
            transition: all 0.25s;
            box-shadow: 0 0 15px rgba(0,82,255,0.4);
        }
        .btn-back-home:hover {
            box-shadow: 0 0 25px rgba(0,240,255,0.7);
            color: #fff;
            transform: translateY(-2px);
        }

        /* Related Section */
        .related-section {
            padding: 40px 0 70px;
            background: var(--bg-secondary);
        }
        .section-title-glow {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 32px;
            color: var(--text-primary);
            position: relative;
            display: inline-block;
        }
        .section-title-glow::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 3px;
            box-shadow: 0 0 10px var(--accent-glow);
        }
        .related-card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            transition: all 0.3s ease;
            text-decoration: none;
            display: block;
            height: 100%;
            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }
        .related-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(0,240,255,0.15);
            transform: translateY(-4px);
        }
        .related-card h5 {
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .related-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .related-card .arrow-cyan {
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 0.85rem;
            display: inline-block;
            margin-top: 8px;
        }

        /* Footer */
        .footer-main {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            color: var(--text-muted);
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-shadow: 0 0 6px var(--accent-glow);
        }
        .footer-main a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer-main a:hover {
            color: var(--accent-cyan);
        }
        .footer-divider {
            border-color: var(--border-subtle);
            margin: 24px 0;
        }

        /* FAB Cyber */
        .fab-cyber {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1055;
            width: 52px;
            height: 52px;
            border-radius: 50px;
            background: rgba(13,17,30,0.75);
            backdrop-filter: blur(12px);
            border: 1.5px solid var(--border-glow);
            box-shadow: 0 0 18px var(--accent-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            transition: all 0.25s ease;
            opacity: 0.65;
            animation: fabFloat 3s infinite ease-in-out;
        }
        .fab-cyber:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0,240,255,0.7);
            border-color: #fff;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        .fab-notify {
            position: absolute;
            top: 6px;
            right: 10px;
            width: 10px;
            height: 10px;
            background: #FF007F;
            border-radius: 50%;
            box-shadow: 0 0 8px #FF007F;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .navbar-brand-text-full {
                display: none;
            }
            .nav-brand {
                font-size: 1rem;
            }
            .article-main-body {
                padding: 28px 18px;
                font-size: 0.95rem;
            }
            .article-hero {
                padding: 40px 0 30px;
            }
            .section-title-glow {
                font-size: 1.6rem;
            }
            .fab-cyber {
                width: 46px;
                height: 46px;
                left: 12px;
                bottom: 85px;
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .btn-outline-nav,
            .btn-solid-nav {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .article-main-body h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category2 */
:root {
            /* Style D: Cyber-Tron & Electric Blue */
            --bg-deep: #08090F;
            --bg-navy: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --card-bg: rgba(13, 17, 30, 0.8);
            --card-border: rgba(0, 82, 255, 0.3);
            --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.5);
            --glow-blue: 0 0 20px rgba(0, 82, 255, 0.4);
            --gradient-cyber: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --navbar-bg: rgba(8, 9, 15, 0.85);
            --border-radius-sm: 6px;
            --border-radius-md: 12px;
            --border-radius-lg: 20px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: radial-gradient(ellipse at 20% 20%, #0a0f1f 0%, #08090F 60%, #060810 100%);
            color: var(--text-silver);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: var(--transition-fast);
        }
        a:hover { color: #66F0FF; }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Navbar */
        .navbar-main {
            background: var(--navbar-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.25);
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 12px 0;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }

        .nav-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition-smooth);
        }
        .nav-brand:hover {
            text-shadow: 0 0 18px rgba(0, 240, 255, 0.7);
            color: #fff;
        }
        .brand-icon {
            font-size: 1.8rem;
            filter: drop-shadow(0 0 8px var(--accent-cyan));
        }

        .nav-link-item {
            color: var(--text-silver);
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 20px;
            transition: var(--transition-fast);
            font-size: 0.95rem;
            position: relative;
        }
        .nav-link-item:hover,
        .nav-link-item.active {
            color: #fff;
            background: rgba(0, 82, 255, 0.15);
            box-shadow: 0 0 10px rgba(0, 82, 255, 0.25);
        }

        .nav-auth-btns .btn-outline-nav {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 6px 20px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }
        .btn-outline-nav:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--glow-cyan);
        }

        .btn-solid-nav {
            background: var(--gradient-cyber);
            border: none;
            color: #08090F;
            font-weight: 700;
            padding: 6px 22px;
            border-radius: 24px;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
            box-shadow: var(--glow-blue);
        }
        .btn-solid-nav:hover {
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            background: rgba(0, 240, 255, 0.1);
            border-radius: 8px;
            padding: 6px 12px;
        }

        #mobileNav {
            background: rgba(8, 9, 15, 0.98);
            backdrop-filter: blur(20px);
            border-top: 1px solid var(--accent-blue);
        }

        /* Hero Banner - Category */
        .hero-category {
            padding: 70px 0 60px;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.1) 0%, rgba(8, 9, 15, 0.95) 80%),
                        url('/assets/images/backpic/back-3.jpg') center / cover no-repeat;
            position: relative;
            text-align: left;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(8, 9, 15, 0.75);
            z-index: 1;
        }
        .hero-category .container-custom {
            position: relative;
            z-index: 2;
        }
        .hero-category h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            text-shadow: 0 0 25px rgba(0, 82, 255, 0.6);
            margin-bottom: 16px;
        }
        .hero-category .lead {
            color: var(--text-silver);
            font-size: 1.15rem;
            max-width: 700px;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 30px;
            flex-wrap: wrap;
        }
        .hero-stat {
            background: rgba(13, 17, 30, 0.7);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(0, 240, 255, 0.4);
            border-radius: var(--border-radius-md);
            padding: 16px 28px;
            text-align: center;
            box-shadow: var(--glow-cyan);
        }
        .hero-stat .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-silver);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* Section Styling */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--accent-cyan);
            box-shadow: 0 0 10px var(--accent-cyan);
            border-radius: 3px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 40px;
        }

        /* Glass Cards */
        .glass-card {
            background: rgba(13, 17, 30, 0.6);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 82, 255, 0.25);
            border-radius: var(--border-radius-lg);
            padding: 28px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            transition: var(--transition-smooth);
            height: 100%;
        }
        .glass-card:hover {
            border-color: rgba(0, 240, 255, 0.7);
            box-shadow: 0 12px 40px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }
        .glass-card .card-label {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }
        .glass-card h3 {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .percentage-badge {
            background: var(--gradient-cyber);
            color: #08090F;
            font-weight: 800;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 1.1rem;
            display: inline-block;
            margin: 10px 0;
        }

        /* Comparison Cards */
        .promo-compare-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .promo-box {
            background: rgba(8, 9, 15, 0.9);
            border-left: 4px solid var(--accent-blue);
            padding: 24px;
            border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
            transition: var(--transition-fast);
        }
        .promo-box:hover {
            border-left-color: var(--accent-cyan);
            background: rgba(13, 17, 30, 0.9);
        }
        .promo-box .promo-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }

        /* Steps Flow */
        .step-flow {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: space-between;
        }
        .step-item {
            flex: 1 1 180px;
            text-align: left;
            padding: 20px;
            background: rgba(13, 17, 30, 0.5);
            border-radius: var(--border-radius-md);
            border-top: 3px solid var(--accent-blue);
        }
        .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-cyan);
        }

        /* CTA Area */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.25) 0%, rgba(0, 240, 255, 0.05) 100%);
            border-radius: var(--border-radius-lg);
            border: 1px solid rgba(0, 82, 255, 0.5);
            padding: 48px 32px;
            text-align: left;
        }
        .btn-cta-primary {
            background: var(--gradient-cyber);
            border: none;
            color: #08090F;
            font-weight: 700;
            padding: 14px 40px;
            border-radius: 30px;
            font-size: 1.1rem;
            box-shadow: var(--glow-blue);
            transition: var(--transition-smooth);
            display: inline-block;
        }
        .btn-cta-primary:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.8);
            transform: scale(1.04);
            color: #000;
        }

        /* FAQ Accordion */
        .accordion-faq .accordion-button {
            background: rgba(13, 17, 30, 0.8) !important;
            color: #fff !important;
            border: 1px solid rgba(0, 82, 255, 0.3);
            font-weight: 600;
        }
        .accordion-faq .accordion-button:not(.collapsed) {
            background: rgba(0, 82, 255, 0.2) !important;
            box-shadow: var(--glow-blue);
        }

        /* Footer */
        .footer-main {
            background: #060810;
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            color: var(--text-muted);
            padding: 48px 0 24px;
            margin-top: 60px;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-divider {
            border-color: rgba(0, 240, 255, 0.2);
            margin: 28px 0;
        }

        /* FAB Left */
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-image: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan)) 1;
            border-radius: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--glow-cyan);
            transition: var(--transition-smooth);
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }
        .fab-left:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
        }

        @media (max-width: 768px) {
            .hero-category h1 { font-size: 2rem; }
            .hero-stats { gap: 16px; }
        }